From: Jon Hunter <jon-hunter@ti.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>,
Vinod Koul <vinod.koul@intel.com>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/2] dma:of: Use a mutex to protect the of_dma_list
Date: Sun, 21 Apr 2013 20:22:40 -0500 [thread overview]
Message-ID: <517490E0.9030704@ti.com> (raw)
In-Reply-To: <201304200113.02908.arnd@arndb.de>
On 04/19/2013 06:13 PM, Arnd Bergmann wrote:
> On Saturday 20 April 2013, Jon Hunter wrote:
>> Change also means that of_dma_request_slave_channel() cannot be called
>> from a context where it is not possible to sleep too, right? May be
>> worth mentioning this in the changelog as well.
>
> You already cannot do that, because it requires dma_list_mutex.
Right in the case where you use of_dma_simple_xlate(). However, someone
could implement whatever they wanted for the xlate. Probably not likely
as it needs to return struct dma_chan, but could be possible. That's
all. Not a big deal.
Cheers
Jon
next prev parent reply other threads:[~2013-04-22 1:22 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-19 9:42 [PATCH 1/2] dma: of: Fix of_node reference leak Lars-Peter Clausen
2013-04-19 9:42 ` [PATCH 2/2] dma:of: Use a mutex to protect the of_dma_list Lars-Peter Clausen
2013-04-19 10:13 ` Arnd Bergmann
2013-04-19 11:04 ` Lars-Peter Clausen
2013-04-19 12:25 ` Arnd Bergmann
2013-04-19 22:45 ` Jon Hunter
2013-04-19 23:13 ` Arnd Bergmann
2013-04-22 1:22 ` Jon Hunter [this message]
2013-04-20 7:28 ` Lars-Peter Clausen
2013-04-20 10:38 ` Arnd Bergmann
2013-04-22 1:18 ` Jon Hunter
2013-04-19 10:10 ` [PATCH 1/2] dma: of: Fix of_node reference leak Arnd Bergmann
2013-04-19 22:29 ` Jon Hunter
2013-05-02 16:24 ` Vinod Koul
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